Some species were very compassionate towards children, such as the star whale. In fact, the last of this species willingly came to save the people of Britain because it could not bear to see their children cry and even continued carrying the population for their sake despite what had been done to it. (TV:The Beast Below) Another example was the mysterious Fairies, who not only refrained from harming them but required them to continue their race from time to time. (TV: Small Worlds)

The 456 demanded that Earth hand over one tenth of the children of the world. Frobisher offered one child per million people on Earth. The 456 refused the offer; they demonstrated that by getting the children to chant a number: ten percent of all the children of the world. Jack, with Ianto Jones, interfered and demanded that no children be taken. As he demanded war, the 456 demonstrated their strength by poisoning and killing everyone in the building. (TV: Children of Earth: Day Four)